Bottom portion of a housing of a mobile device



FIG. 1 is a front view of the bottom portion of a housing of a mobile device showing our new design;

FIG. 2 is a rear view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a left side view thereof; and,

FIG. 7 is a perspective view of the bottom portion of a housing of a mobile device shown on a reduced scale.

The broken lines shown in FIGS. 1–7 are included for illustrative purposes only and form no part of the claimed design. 

I claim the ornamental design for a bottom portion of a housing of a mobile device, as shown and described. 